dlls/user/tests/monitor.c

   1 /*
   2  * Unit tests for monitor APIs
   3  *
   4  * Copyright 2005 Huw Davies
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "wine/test.h"
  22 #include "winbase.h"
  23 #include "wingdi.h"
  24 #include "winuser.h"
  25
  26 static HMODULE hdll;
  27 static BOOL (WINAPI *pEnumDisplayDevicesA)(LPCSTR,DWORD,LPDISPLAY_DEVICEA,DWORD);
  28 static BOOL (WINAPI *pEnumDisplayMonitors)(HDC,LPRECT,MONITORENUMPROC,LPARAM);
  29 static BOOL (WINAPI *pGetMonitorInfoA)(HMONITOR,LPMONITORINFO);
  30
  31 static void init_function_pointers(void)
  32 {
  33     hdll = GetModuleHandleA("user32.dll");
  34
  35     if(hdll)
  36     {
  37        pEnumDisplayDevicesA = (void*)GetProcAddress(hdll, "EnumDisplayDevicesA");
  38        pEnumDisplayMonitors = (void*)GetProcAddress(hdll, "EnumDisplayMonitors");
  39        pGetMonitorInfoA = (void*)GetProcAddress(hdll, "GetMonitorInfoA");
  40     }
  41 }
  42
  43 static BOOL CALLBACK monitor_enum_proc(HMONITOR hmon, HDC hdc, LPRECT lprc,
  44                                        LPARAM lparam)
  45 {
  46     MONITORINFOEXA mi;
  47     char *primary = (char *)lparam;
  48
  49     mi.cbSize = sizeof(mi);
  50
  51     ok(pGetMonitorInfoA(hmon, (MONITORINFO*)&mi), "GetMonitorInfo failed\n");
  52     if(mi.dwFlags == MONITORINFOF_PRIMARY)
  53         strcpy(primary, mi.szDevice);
  54
  55     return TRUE;
  56 }
  57
  58 static void test_enumdisplaydevices(void)
  59 {
  60     DISPLAY_DEVICEA dd;
  61     char primary_device_name[32];
  62     char primary_monitor_device_name[32];
  63     DWORD primary_num = -1, num = 0;
  64
  65     dd.cb = sizeof(dd);
  66     if(pEnumDisplayDevicesA == NULL) return;
  67     while(1)
  68     {
  69         BOOL ret;
  70         HDC dc;
  71         ret = pEnumDisplayDevicesA(NULL, num, &dd, 0);
  72         ok(ret || num != 0, "EnumDisplayDevices fails with num == 0\n");
  73         if(!ret) break;
  74         if(dd.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
  75         {
  76             strcpy(primary_device_name, dd.DeviceName);
  77             primary_num = num;
  78         }
  79         if(dd.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)
  80         {
  81             /* test creating DC */
  82             dc = CreateDCA(dd.DeviceName, NULL, NULL, NULL);
  83             ok(dc != NULL, "Failed to CreateDC(\"%s\") err=%ld\n", dd.DeviceName, GetLastError());
  84             DeleteDC(dc);
  85         }
  86         num++;
  87     }
  88     ok(primary_num != -1, "Didn't get the primary device\n");
  89
  90     if(pEnumDisplayMonitors && pGetMonitorInfoA) {
  91         ok(pEnumDisplayMonitors(NULL, NULL, monitor_enum_proc, (LPARAM)primary_monitor_device_name),
  92            "EnumDisplayMonitors failed\n");
  93
  94         ok(!strcmp(primary_monitor_device_name, primary_device_name),
  95            "monitor device name %s, device name %s\n", primary_monitor_device_name,
  96            primary_device_name);
  97     }
  98 }
  99
 100
 101 START_TEST(monitor)
 102 {
 103     init_function_pointers();
 104     test_enumdisplaydevices();
 105 }